Don't queue up log messages when the process isn't running a Quarkus …

…application

Fixes: quarkusio#14295

independent-projects/bootstrap/runner/src/main/java/io/quarkus/bootstrap/logging/InitialConfigurator.java

@@ -14,25 +14,41 @@
 public final class InitialConfigurator implements EmbeddedConfigurator {
 
     public static final DelayedHandler DELAYED_HANDLER;
+    private static final Handler[] HANDLER_ARRAY;
 
     static {
-        //a hack around class loading
-        //this is always loaded in the root class loader with jboss-logmanager,
-        //however it may also be loaded in an isolated CL when running in dev
-        //or test mode. If it is in an isolated CL we load the handler from
-        //the class on the system class loader so they are equal
-        //TODO: should this class go in its own module and be excluded from isolated class loading?
-        DelayedHandler handler = new DelayedHandler();
+        boolean isQuarkusApplication = true;
+        DelayedHandler delayedHandler = new DelayedHandler();
         ClassLoader cl = InitialConfigurator.class.getClassLoader();
         try {
-            Class<?> root = Class.forName(InitialConfigurator.class.getName(), false, ClassLoader.getSystemClassLoader());
-            if (root.getClassLoader() != cl) {
-                handler = (DelayedHandler) root.getDeclaredField("DELAYED_HANDLER").get(null);
+            // Check and see if this is a Quarkus application. If it is, this class has already been loaded
+            Class.forName("io.quarkus.runner.ApplicationImpl", false, cl);
+
+            //a hack around class loading
+            //this is always loaded in the root class loader with jboss-logmanager,
+            //however it may also be loaded in an isolated CL when running in dev
+            //or test mode. If it is in an isolated CL we load the handler from
+            //the class on the system class loader so they are equal
+            //TODO: should this class go in its own module and be excluded from isolated class loading?
+            try {
+                Class<?> root = Class.forName(InitialConfigurator.class.getName(), false, ClassLoader.getSystemClassLoader());
+                if (root.getClassLoader() != cl) {
+                    delayedHandler = (DelayedHandler) root.getDeclaredField("DELAYED_HANDLER").get(null);
+                }
+            } catch (Exception e) {
+                //ignore, happens on native image build
             }
-        } catch (Exception e) {
-            //ignore, happens on native image build
+        } catch (ClassNotFoundException e) {
+            isQuarkusApplication = false;
+        }
+        Handler[] handlerArray;
+        if (isQuarkusApplication) {
+            handlerArray =  new Handler[] { delayedHandler };
+        } else {
+            handlerArray = EmbeddedConfigurator.NO_HANDLERS;
         }
-        DELAYED_HANDLER = handler;
+        HANDLER_ARRAY = handlerArray;
+        DELAYED_HANDLER = delayedHandler;
     }
 
     @Override
@@ -54,7 +70,7 @@ public Handler[] getHandlersOf(final String loggerName) {
                         createDefaultHandler()
                 };
             } else {
-                return new Handler[] { DELAYED_HANDLER };
+                return HANDLER_ARRAY;
             }
         } else {
             return EmbeddedConfigurator.NO_HANDLERS;